Diverse Synthesis of Triarylselenonium Salts and o -(Alkoxy)aryl Aryl Selanes via Insertion of Benzyne into the Se═O Bond.

An insertion of benzyne into the Se═O bond has been realized. In this reaction, two types of compounds containing selenium could be synthesized from different substrates. When diaryl selenium oxides were used, triarylselenonium salts were furnished, while o -(alkoxy)phenyl phenyl selanes could be produced from aryl alkyl selenium oxides.